Finding the Fourth Proportional to 145,729.60, 202,023.95 and 137,747.05
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Solution
The fourth proportional to 145,729.60, 202,023.95 and 137,747.05 is: 190,957.80
Step by Step Solution
- Step 1: Write the proportion equation
145,729.60 : 202,023.95 = 137,747.05 : x - Step 2: Convert to fraction form
145,729.60/202,023.95 = 137,747.05/x - Step 3: Cross multiply
145,729.60x = 202,023.95 × 137,747.05 - Step 4: Simplify right side
145,729.60x = 27,828,203,141.85 - Step 5: Solve for x
x = 27,828,203,141.85/145,729.60 - Step 6: Final answer
x = 190,957.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.